EP0177879A3 - Circuit responsive to fault current - Google Patents

Circuit responsive to fault current Download PDF

Info

Publication number
EP0177879A3
EP0177879A3 EP85112402A EP85112402A EP0177879A3 EP 0177879 A3 EP0177879 A3 EP 0177879A3 EP 85112402 A EP85112402 A EP 85112402A EP 85112402 A EP85112402 A EP 85112402A EP 0177879 A3 EP0177879 A3 EP 0177879A3
Authority
EP
European Patent Office
Prior art keywords
circuit
rectifier circuit
auxiliary
trigger
secondary winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85112402A
Other languages
German (de)
French (fr)
Other versions
EP0177879A2 (en
Inventor
Klaus Hafemann
Günter Kullik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft
Original Assignee
Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft filed Critical Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft
Publication of EP0177879A2 publication Critical patent/EP0177879A2/en
Publication of EP0177879A3 publication Critical patent/EP0177879A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Dargestellt und beschrieben ist eine Fehlerstromschutz­ schaltung (1) mit einem Summenstromwandler (4), der zwei Primärwicklungen (5, 6) und eine Sekundärwicklung (7) auf­ weist, und mit einer Auslöseschaltung (8), die einen Auslöse­ transistor (9) und zwei Steuereingänge (10, 11) aufweist und der Sekundärwicklung (7) des Summenstromwandlers (4) nachgeschaltet ist. Residual current protection is shown and described circuit (1) with a summation current transformer (4), the two Primary windings (5, 6) and a secondary winding (7) has, and with a trigger circuit (8) which has a trigger transistor (9) and two control inputs (10, 11) and the secondary winding (7) of the total current transformer (4) is connected downstream.

Bei der erfindungsgemäßen Fehlerstromschutzschaltung (1) ist die Ansprechempfindlichkeit dadurch erhöht, daß an die Sekundärwicklung (7) des Summenstromwandlers (4) eine Gleichrichterschaltung (12) angeschlossen ist, daß die Gleich­ richterschaltung (12) ein Halbleiterventil (13) und einen Spei­ cher bzw. Glättungskondensator (14) enthält, daß der Pluspol (15) der Gleichrichterschaltung (12) an den ersten Steuerein­ gang (10) der Auslöseschaltung (8) angeschlossen ist und daß zwischen dem Minuspol (16) der Gleichrichterschaltung (12) und dem zweiten Steuereingang (11) der Auslöseschaltung (8) eine von einem Hilfsstrom durchflossene Hilfsimpedanz (17) vorgesehen ist. Vorzugsweise ist die Gleichrichterschaltung (12) als Villardschaltung ausgeführt und als Hilfsimpedanz (17) eine Hilfsdiode vorgesehen. In the residual current protection circuit according to the invention (1) the sensitivity is increased in that the Secondary winding (7) of the total current transformer (4) one Rectifier circuit (12) is connected that the equal rectifier circuit (12) a semiconductor valve (13) and a Spei cher or smoothing capacitor (14) contains that the positive pole (15) of the rectifier circuit (12) to the first control unit gang (10) of the trigger circuit (8) is connected and that between the negative pole (16) of the rectifier circuit (12) and the second control input (11) of the trigger circuit (8) an auxiliary impedance through which an auxiliary current flows (17) is provided. The rectifier circuit is preferably (12) designed as a Villard circuit and as an auxiliary impedance (17) an auxiliary diode is provided.

EP85112402A 1984-10-06 1985-10-01 Circuit responsive to fault current Withdrawn EP0177879A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3436746 1984-10-06
DE3436746 1984-10-06

Publications (2)

Publication Number Publication Date
EP0177879A2 EP0177879A2 (en) 1986-04-16
EP0177879A3 true EP0177879A3 (en) 1987-08-19

Family

ID=6247296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112402A Withdrawn EP0177879A3 (en) 1984-10-06 1985-10-01 Circuit responsive to fault current

Country Status (3)

Country Link
EP (1) EP0177879A3 (en)
AU (1) AU4840785A (en)
ES (1) ES8608742A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59005801D1 (en) * 1989-09-07 1994-06-30 Siemens Ag Residual current circuit breaker.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1523445A (en) * 1967-03-23 1968-05-03 Comp Generale Electricite Circuit breaker incorporating a semiconductor threshold element
DE2036134A1 (en) * 1969-08-22 1971-02-25 Hubbell Inc Harvey Earth fault relay circuit
DE2547550B2 (en) * 1974-10-31 1980-09-18 Sgs-Ates Componenti Elettronici S.P.A., Agrate Brianza, Mailand (Italien) Voltage converter circuit
EP0113026A1 (en) * 1982-12-02 1984-07-11 Siemens Aktiengesellschaft Earth leakage circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1523445A (en) * 1967-03-23 1968-05-03 Comp Generale Electricite Circuit breaker incorporating a semiconductor threshold element
DE2036134A1 (en) * 1969-08-22 1971-02-25 Hubbell Inc Harvey Earth fault relay circuit
DE2547550B2 (en) * 1974-10-31 1980-09-18 Sgs-Ates Componenti Elettronici S.P.A., Agrate Brianza, Mailand (Italien) Voltage converter circuit
EP0113026A1 (en) * 1982-12-02 1984-07-11 Siemens Aktiengesellschaft Earth leakage circuit breaker

Also Published As

Publication number Publication date
ES547611A0 (en) 1986-07-16
EP0177879A2 (en) 1986-04-16
ES8608742A1 (en) 1986-07-16
AU4840785A (en) 1986-04-10

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Inventor name: HAFEMANN, KLAUS

Inventor name: KULLIK, GUENTER